Synthesis of a Novel Dual Inhibitor of Thromboxane A2 Synthetase and 5-Lipoxygenase (E3040) via the Direct Coupling Reaction of Hydroquinone with 3-Pyridinecarboxaldehyde.
Synthesis of a Novel Dual Inhibitor of Thromboxane A2 Synthetase and 5-Lipoxygenase (E3040) via the Direct Coupling Reaction of Hydroquinone with 3-Pyridinecarboxaldehyde.
Processes for the preparation of hydroquinone and benzoquinone
申请人:Eisai Co., Ltd.
公开号:US05637716A1
公开(公告)日:1997-06-10
Intermediates for the preparation of benzothiazole derivatives useful for the prevention and treatment of diseases for which an inhibitory action against the production of leukotriene and thromboxane is efficacious, and industrially advantageous processes for the preparation of the intermediates. A hydroquinone derivative is condensed with a pyridylcarboxyaldehyde derivative without the protecting the hydroxyl groups of the hydroquinone derivative to form a pyridylmethylhydroquinone derivative, which is further oxidized into a pyridylmethyl-1,4-benzoquinone derivative: ##STR1##
PROCESS FOR PRODUCING HYDROQUINONE AND BENZOQUINONE DERIVATIVE
申请人:Eisai Co., Ltd.
公开号:EP0704435A1
公开(公告)日:1996-04-03
Intermediates used in producing benzothiazole derivatives useful for preventing and treating diseases against which the activity of inhibiting leucotriene and thromboxane production is efficacious; and a process for producing the same. The process comprises condensing a hydroquinone derivative with a pyridylcarboxaldehyde derivative without protecting the hydroxyl groups of the hydroquinone and oxidizing the formed pyridylmethylhydroquinone derivative into a pyridylmethyl-1,4-benzoquinone derivative.